OpenZeppelin

OpenZeppelin is a blockchain-security company that provides staffed smart-contract security audits for protocols and onchain financial infrastructure. Its audit practice covers both smart contracts and protocols, while its wider product range makes it relevant to teams that want security work connected to the rest of an application lifecycle.

A dedicated team reviews architecture, code, and remediation

Its audit offering is a defined client engagement staffed by at least two blockchain security researchers, with a technical manager and project manager; specialists may support the team when the scope requires them. That breadth can help a team carry the same security focus from contract development through deployment and ongoing operation.

During the audit, each line of code is inspected by at least two security researchers, and the review covers system architecture, code, technical design, and business logic. The engagement includes a fix-review stage in which researchers inspect remediated issues and discuss code-level nuances with the developer team.

A dedicated-team audit rather than a contest

A protocol team requests an audit engagement and supplies code, documentation, and testing context for review; it is a professional service rather than a self-serve scanner or public bug-bounty program. A dedicated-team model can suit a project that wants close coordination, architectural context, and direct discussion through remediation.

Sherlock is a close alternative for teams that want a designated senior reviewer, parallel independent-researcher participation, contest judging, and fix verification. OpenZeppelin centers a dedicated, collaborative audit team, while Sherlock combines a designated senior reviewer with parallel researcher participation and structured contest judging.